I would recommend trying to see a marital counselor, or even a family counselor, together.

It sounds to me as though your hub is trying to avoid some part of his daily life by getting into these attention dividers. Maybe he has some trauma from his past, that he hasn't ever dealt with emotionally. Either way, he's avoiding something in his present world. In my opinion, that needs to be worked out. Hopefully, your hub will be willing to work on fixing his problem/s.

I wish you the very best! Gentle hugs to you and your family.